Staff Selection Commission Combined Higher Secondary Level Exam
Question : Which s-block element is a silvery-white metal used in an alloy with copper or nickel to make gyroscopes, springs, electrical contacts, spot-welding electrodes and non-sparking equipment?
Option 1: Beryllium
Option 2: Rubidium
Option 3: Francium
Option 4: Caesium
Correct Answer: Beryllium
Solution : The correct answer is Beryllium.
The symbol of Beryllium is Be with an atomic number of 4. It is a lightweight, metallic element known for its strong and lightweight properties. Beryllium is often used in alloys, especially in the aerospace industry, due to its
Question : Find the value of 15 – 3 of 12 ÷ 2 + 3 of 2 ÷ 2:
Option 1: 75
Option 2: 16
Option 3: 57
Option 4: 0
Correct Answer: 0
Solution : 15 – 3 of 12 ÷ 2 + 3 of 2 ÷ 2 = 15 – 36 ÷ 2 + 6 ÷ 2 = 15 – 18 + 3 = 0 Hence, the correct answer is 0.
Question : An object covers distance which is directly proportional to the square of the time. Its acceleration is:
Option 1: increasing
Option 2: decreasing
Option 3: zero
Option 4: constant
Correct Answer: constant
Solution : The correct option is constant.
An object moves with uniform acceleration when it travels a distance that is directly proportionate to the square of the time. This indicates that during its journey, the object's acceleration stays constant.
Question : The table given below shows the sales of two companies in 5 years.
Which of the following statements is correct? I. The ratio of combined sales of P in years A and B to that of combined sales of Q in years D and E is 1 : 2. II. The sales of P in year C is 300% of the sales of Q in year D.
Option 1: Only I
Option 2: Both I and II
Option 3: Only II
Option 4: Neither I nor II
Correct Answer: Only II
Solution : From the table, I. The combined sales of P in years A and B is 100 + 200 = 300. The combined sales of Q in years D and E is 100 + 50 = 150. So, the ratio of combined sales of P
Question : If $\sin\theta+\cos\theta=\sqrt{2}\cos\theta$, then the value of $\cot\theta$ is:
Option 1: $\sqrt{2}+1$
Option 2: $\sqrt{2}-1$
Option 3: $\sqrt{3}-1$
Option 4: $\sqrt{3}+1$
Correct Answer: $\sqrt{2}+1$
Solution : $\sin\theta+\cos\theta=\sqrt{2}\cos\theta$ ⇒ $\sin \theta = (\sqrt{2}-1)\cos\theta$ ⇒ $\frac{\sin \theta}{(\sqrt{2}-1)}=\cos\theta$ ⇒ $\frac{\sin \theta(\sqrt{2}+1)}{2-1}=\cos\theta$ ⇒ $\frac{\sin \theta(\sqrt{2}+1)}{2-1}=\cos\theta$ ⇒ $\frac{\cos \theta}{\sin \theta}=\sqrt{2}+1$ $\therefore\cot \theta=\sqrt{2}+1$ Hence, the correct answer is $\sqrt{2}+1$.
Question : In MS Excel 365, which among the following shortcuts is used to copy the contents and format of the topmost cell of a selected range into the cells below?
Option 1: Alt + D
Option 2: Ctrl + D
Option 3: Alt + C
Option 4: Ctrl + C
Correct Answer: Ctrl + D
Solution : The correct answer is Ctrl + D.
The Ctrl + D shortcut in MS Excel 365 is used to copy the contents and format of the topmost cell of a selected range into the cells below. It becomes useful when we want
Question : Which is an inherited blood disorder that affects the haemoglobin gene and results in ineffective erythropoiesis.
Option 1: Somatostatinoma
Option 2: Thalassemia
Option 3: Venous thromboembolism
Option 4: Polycythemia vera
Correct Answer: Thalassemia
Solution : The correct option is Thalassemia.
A class of blood diseases known as thalassemia occurs when the body produces insufficient amounts of haemoglobin, the protein that delivers oxygen to red blood cells. Red blood cells with thalassemia don't work or survive as long as they should.
Question : The provision for the post of Vice-President in the Indian Constitution was taken from
Option 1: France
Option 2: United States of America
Option 3: Ireland
Option 4: Japan
Correct Answer: United States of America
Solution : The correct answer is the United States of America.
The United States of America provided the Indian Constitution with the Vice President position. The role and functions of the Vice President of India are somewhat similar to those of the Vice
Question : After allowing a 15% discount, the selling price of the radio becomes Rs. 255. The marked price is:
Option 1: Rs. 500
Option 2: Rs. 600
Option 3: Rs. 400
Option 4: Rs. 300
Correct Answer: Rs. 300
Solution : Discount = 15% The selling price of the radio = Rs. 255 Selling price = $\frac{100-Discount\%}{100}×$ Marked price Rs. 255 = $\frac{85}{100}$× Marked price Marked price = $\frac{255×100}{85}$ = Rs. 300 Hence, the correct answer is Rs. 300.
Question : The difference between the total surface area and the lateral surface area of a cube of side 12 cm is:
Option 1: 292 cm2
Option 2: 290 cm2
Option 3: 288 cm2
Option 4: 286 cm2
Correct Answer: 288 cm2
Solution : Given: Side of the cube = 12 cm. Difference = total surface area – lateral surface area = $6a^{2}-4a^{2}$ = $2a^{2}$ Putting the value of $a$, we have, = $2×12^{2}$ = 288 cm2 Hence, the correct answer is 288 cm2.
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